We're more indirectly already eating methane as it's the source of hydrogen, for making nitrogen fertilizers out of thin air. https://en.wikipedia.org/wiki/Hab

We're more indirectly already eating methane as it's the source of hydrogen, for making nitrogen fertilizers out of thin air. https://en.wikipedia.org/wiki/Haber_process https://en.wikipedia.org/wiki/Haber_process